Re: Al Extrusion Vibration Damping

This sounds very interesting, the best test would be to fill a tube up
with some of the balls, then strike it with something hard. If it
doesn't ring then you may have something. Please let us know what you
find out!!

> I remember a project from an audio article i read quite a few years

ago where some guys made speaker boxes using concrete and polystyrene
balls such as those found in bean bags.

>
> It made the boxes almost dead reasonance wise.

> Rob